Thanks Ed, that last picture addressed my main concern of having the buckle "inside" the SRT attachment. I didn't know if the SRT would unlock the buckle. I know I asked you this in Findlay but I could not remember what your answer was.
I am not familiar with the buckles used on the Ergo' but am pleased with them so far, in fact I am very pleased with the saddle overall.
I have been fighting rain this week so I haven't got it all set up yet. Maybe tomorrow.
The batten seat is sold as an add on and is available in 2 sizes. Size 1 for small and medium size saddle users, and size 2 for large and XL saddle users.
Also the batten seat can retro on to just about any other harness, and can even be put on in mid air!